CM6571 Datasheet, PDF (11/63 Pages) C-Media Electronics – USB 2.0 full speed-compliant

77
DAC_BCLK
78
DAC_DOUT
79
DAC_LRCK
80
DAC_DIN
59
D_I2S_BCLK
63
D_I2S_DI
64
D_I2S_LRCK
66
D_I2S_DO
5
D_DMI_CLK
9
D_DMI_DAT
54
D_DMO_CLK
55
D_DMO_DAT
1
ADC_ DOUT
2
ADC_ LRCK
3
ADC_ DIN
4
ADC_ BCLK
6
ADC_ MCLK
26
SPDIF_O
19
GPIO_0
16
GPIO_1
15
GPIO_2
13
GPIO_3
12
GPIO_4
11
GPIO_5
8
GPIO_6
7
GPIO_7
85
GPIO_8
84
GPIO_9
83
GPIO_10
Revised: Nov. 2012
Page 11 / 63
CM6571
USB Audio Sound Chip
DIO
I2S bit clock
Programmable 3.3V bidirectional buffer, pull-down
DO
I2S serial data output for channels 0 and 1
Programmable 3.3V output buffer
DIO
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
DI Input from DSP to DAC for playback
2-channel I2S Interface
DI I2S bit clock
DI I2S serial data input
DI I2S left/right clock
DO I2S serial data output
Digital Microphone interface
DO Digital microphone clock output
DI Digital microphone data input
DI Digital microphone clock input
DO Digital microphone data output
2-channel I2S ADC interface
DO Output from ADC to DSP for data processing
DIO
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
DI
I2S serial data input for channel 0, 1
Programmable 3.3V input buffer, Schmitt trigger, pull-down
DIO
I2S bit clock
Programmable 3.3V bidirectional buffer, pull-down
DO
I2S master clock
Programmable 3.3V output buffer
S/PDIF I/O
DO
S/PDIF transmitter
Programmable 3.3V output buffer
GPIO
DIO
General purpose input/output (default Volume Up)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-up
DIO
General purpose input/output (default Volume Down)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-up
DIO
General purpose input/output (default Play Mute)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-up
DIO
General purpose input/output (default Rec Mute)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-up
DIO
General purpose input/output (default LED Live, 2K Hz)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
DIO
General purpose input/output (default LED Play Mute)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
DIO
General purpose input/output (default LED Rec Mute, 1K Hz)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output
DIO
(default EQ mode select 0)
Programmable 3.3V/5V tolerance GPIO[8:7]=0,0: Normal
bidirectional buffer, pull-down GPIO[8:7]=1,0: Communication
General purpose input/output GPIO[8:7]=0,1: Gaming
DIO
(default EQ mode select 1)
GPIO[8:7]=1,1: Movie
Programmable 3.3V/5V tolerance
bidirectional buffer, pull-down
DIO
General purpose input/output (default Rec Clip Indicator)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
DIO
General purpose input/output (default Wave Volume Up)
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
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